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BURNDY
®
Mechanical
US: 1-800-346-4175
www.burndy.com
Canada: 1-800-387-6487
Blue highlighted items are industry standard and most frequently ordered.
U-BLOK™ POWER
DISTRIBUTION
BLOCKS
For Junction Box Applications
The U-BLOK™ system is a modern, state-of-
the-art approach to multi-load power distribu-
tion applications. Among typical uses are
multi-story or multi-unit buildings, HVAC,
refrigeration, control panels, motor control,
switch gear, elevator systems and materials-
handling equipment. U-BLOK™ is UL Listed
for Copper or Aluminum conductors and rated
for 600-volt applications. U-BLOK™ can be
mounted on bases for use in troughs or bolt-
ed directly to junction boxes. AL9CU rated.
Features and Benefits
• Connector top slides OFF/ON for quick
cable lay-in.
Labor savings. Easy access for
installation, modifications or retrofit.
• Electro-tin plated connectors in each pole.
Durability. High-conductivity and
resistance to corrosion.
• Compact size.
Requires less space than traditional
connection methods.
• Trough installations can be mounted on
raised platforms.
Passage of cables under block means
through-cables need not be terminated.
FT4B500
3 WIRE POWER DISTRIBUTION BLOCKS
PENETROX™ inhibitor is recommended for all aluminum
wire connections.
For two wire tap range is 8 through 1/0.
• Insulating covers and mounting blocks
rated 94-VO.
Saves costly taping, time and material.
Conforms to or exceeds building codes.
• Connectors accommodate a wide range
of wire sizes.
Reduces parts inventory requirements.
• Feeder conductors can be cut or fed
through on a continuous run.
Ease of installation.
Maximum
Number of
Allen
Catalog Wires per
Al or Cu Wire Range
*
Weight
Wrench Torque
Strip
Number
Phase
Run
Tap
W
L
H
Each
Size
(in-lb)
Length
FT3B4/0
3/0 - 4/0
6 - 4/0
1-1/4 lbs.
1/4
200
1-1/2
FT3B500
2
400 - 500
6 - 500
3-7/8
5-7/8
4-1/8
2-1/8 lbs.
3/8
375
2-5/16
3S
2
250-350
6 - 350
3-5/8
9-3/4
4-7/8
3 lbs.
1/4
200
1-3/4
Run Tap
Run
Tap
3U
1
8
3/0-500
6 - 1/0
4-3/4
9-3/4
5-1/2
3 lbs.
5/32
110
2-5/16 1-5/32
4 WIRE POWER DISTRIBUTION BLOCKS
Maximum
Number of
Allen
Catalog Wires per
Al or Cu Wire Range
*
Weight
Wrench Torque
Strip
Number
Phase
Run
Tap
W
L
H
Each
Size
(in-lb)
Length
FT4B4/0
3/0 - 4/0
6 - 4/0
2 lbs.
1/4
200
1-1/2
FT4B500
2
400 - 500
6 - 500
3-7/8
7-7/8
4-1/8
2-3/4 lbs.
3/8
375
2-5/16
4S
2
250-350
6 - 350
3-5/8
11-3/4
4-7/8
3-1/2 lbs.
1/4
200
1-3/4
Run Tap
Run
Tap
4U
1
8
3/0-500
6 - 1/0
4-3/4
11-3/4
5-1/2
3-1/2 lbs.
5/32
110
2-5/16 1-5/32
FT3B4/0
3S
3U
*
Aluminum and copper conductors cannot be assembled
under the same pressure plate or t-bar.